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85199305 = 5109156329
BaseRepresentation
bin1010001010000…
…00100111001001
312221022120110211
411011000213021
5133302334210
612242041121
72053116322
oct505004711
9187276424
1085199305
1144102554
12246491a1
1314860ab9
14b45b449
15772e38a
hex51409c9

85199305 has 8 divisors (see below), whose sum is σ = 103177800. Its totient is φ = 67533696.

The previous prime is 85199293. The next prime is 85199321. The reversal of 85199305 is 50399158.

It can be written as a sum of positive squares in 4 ways, for example, as 14235529 + 70963776 = 3773^2 + 8424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85199305 - 25 = 85199273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77620 + ... + 78709.

It is an arithmetic number, because the mean of its divisors is an integer number (12897225).

Almost surely, 285199305 is an apocalyptic number.

It is an amenable number.

85199305 is a deficient number, since it is larger than the sum of its proper divisors (17978495).

85199305 is a wasteful number, since it uses less digits than its factorization.

85199305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156443.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 85199305 is about 9230.3469598927. The cubic root of 85199305 is about 440.0263500060.

The spelling of 85199305 in words is "eighty-five million, one hundred ninety-nine thousand, three hundred five".

Divisors: 1 5 109 545 156329 781645 17039861 85199305